The same problem now appeared in a different world after I died by soffocating in a wall immediately after loading another world which I saved. I did not mention that it only happened after that because I thought it was a different problem, but now it happened together again.
The world in which this happened to me stopped having this problem now.
After exiting and reentering the world after what FOV was normal I couldn’t find items which I was holding while I was dying. Also the game functioned as if I did’t do things that I have and am playing in that world for the first time.